Improvement in cylinders of wool-burring and similar machines



UNITED STATES rErcE.

PATENT C. L. GODDARI), OF NEWT YORK, N. Y.

Specilication forming part of Letters Patent N0. 49,625, dated August 29, 1855.

To alt whom t may concern.

Be it known that I, G. L. GODDAED, of the city, county7 and State of New York, have invented a new and useful Improvement in the Construction of the Cylinders of Machines for Separating Burrs and other Foreign Substances from Tool and other Fibers, and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making part of this specilcation, in which- Figure l is a eross-section of a cylinder constructed on my improved plan 5 Fig. 2, a view of the surface of the inner cylinder on which the toothed rings are mounted, and Fig. 3 a separate view of one ofthe metal strips.

The same letters indicate like parts in all the figures.

Serious difticulties have been experienced in the construction of the barring-cylinder of machines for burring wool. It is well known that the barring-cylinder is composed of a series of thin metallicrings, with gullets out into their peripheries to form long-hacked teeth, and interposed packing-rings, both series of rings heilig slippedonto a cylinder and clamped between two heads. Vhen the inner cylinder is made 0f solid metal it is too heavy. To avoid the weightthey have in general been made hollow, either of sheet metal wrought to the required form or of cast metal cast of the form required. When made of sheet metal much skill and experience are required to make th e surface cylindrical and connect it with the shaft so that it will turn true, but even when made accurately they were liable to spring, andit soon becainenecessary to makethem douhlethatis,of two thicknesses of sheet metal-a mode ofcoustruction which required more skill andlahor, and which therefore materially increased the cost, and even when so made they are liable to he sprung out of true. When made of cast metal much skill is required to get the metal of uniform thickness and weight all around; otherwise, by centrifugal force, when rotated at high velocity, they would be sprung out of true7 and thereby become injured and waste fibers.

By the mode of construction which I have invented I avoid all the defects of the modes heretofore practiced and make a cylinder that will not spring, even when run at the highest velocity, as true as the solid cylinder, as light as the sheet or cast hollow cylinder, as durable as any of them, and at less cost than the cheapest of them.

The shaft a I turn perfectly true, particularly along that part of its length which is to be within the length ot' the cylinder. Near one endit is formed with or has a metallic head, b, secured to it, and near the opposite end it is suit-ably formed to receive the other head, c, hy which the two series of rings are clamped. I then take a block of wood, d, which has been thoroughly steamed and kiln-dried, and here a hole through thelength ofit, and in the center, and otsuch a size that itcan he driven onto the shaft so tight that it will not turn thereon, taking care not to spring the shaft in driving; but before driving it on I turn the ends so that they shall be true, and that the whole block shall he of the required length to hold the rings when clamped. After theblock has been put on the shaft I turn its outer periphery to the required size to receive and tit theinner periphery of the rings; but before putting 0n the rings I cut radial gains into this wooden cylinder to within a short distance of the sha-ft, andinto these gains l fit and insert strips 0f metal c, preferring iron or steel, and reduce the outer edges of these strips so that they shall form part of the surface of the cylinder. I cut these gains diagonally from end to end to cut the tibers ot' the wood, so that in no part shall any of the iibers of the wood between the metal strips extend from end to end of the cylinder. This will eftectually prevent the wood from working if, by accident, the steaming and kiln-drying failed to kill the wood. Or, instead of cutting the gains diagonally, I form the cylinder of numerous pieces of wood cut diagonally and united with glue or other cement.

I prefer to make the inner edge of the me tallic strips c with projections j' at given intervals, and extend the gains through to the shaft in corresponding parts of the length, so that the projectionsf shall extend to and rest on the shaft. After the inner cylinder has been thus prepared the toothed rings g and interposed packingring h are slipped on and clamped between the heads b and c, and the outer periphery Iinished in the usual way.

That I claim as my invention, and desire to secure by Letters Patent, is-

The manner of constructing the inner cylinn der of burringemachines of metal strips and Wood combined on a metal shaft, substantially as and for the purpose specified.

Witnesses: U. L. GODDARD.

WM. H. BISHOP, A. DE Laer'. 

